When was the last time you thought about putting on sunscreen? I know, it’s March; but many of us travel over the winter or take full advantage of what sun we do get! I tend to harp on my friends about protecting their skin: sunscreen, hats, and hydration. I’ve had some run-ins with pre-cancerous skin, and my father has too. Several friends have, too. And for runners, it’s a common malady because we tend to get…